present at birth, caused by either inherited or developmental disorder.
the globular process.
epithelial-lined blind tracts located at the corners of the mouth.
-Occurs by a complete or partial adhesion of the lingual frenum to the floor of the mouth.
- speech problems if severe.
Gingival recession and bone loss can occur if the frenum is attached high on the lingual alveolar ridge.
Frenectomy-Surgical removal of a portion of the lingual frenum.
-small mass of thyroid tissue on the tongue away from the normal location of thyroid gland.
During development, thyroid gland tissue migrates from the area of the foramen cecum down to neck. Any remnant left over can lead to a lingual thyroid nodule.
- may be only functional thyroid they have
**Also called follicular cyst
**Forms around the crown of an unerupted or developing tooth**can develop into tumor
**Most often seen around an impacted 3rd molar.
Can be small, or very large, can displace teeth or cause a fracture in the mandible.**
-**Most common in 3rd molar areas,(especially mandibular 3rd molar region) or distal to the third molar.***
- FORMS IN PLACE OF TOOTH CAUSED BY CYSTIC DEGENERATION IN ODONTOGENIC EPITHELIUM OF TOOTH GERM BEFORE MINERALIZATION HAS BEEN INITIATED
Asymptomatic, multilocular or unilocular Radiolucent lesion on the lateral aspect of a tooth root.
a small bulge or nodule of the attached gingiva or interdental papillae.
similar to the lateral periodontal cyst: thin band of stratified squamous epithelium trhat exhibits focal epithelial thickenings that lines the cyst.
usually asymptomatic, or there may be a pink bulge near the apices and between the roots of the maxillary central incisors on the lingual surface.
Teeth test vital.
-cyst lined with stratified squamous to pseudostratified ciliated columnar epithelium.
- connective tissue wall contains nerves and blood vessels normally found in the area, and may also have some inflammatory cells.
cyst lined with stratified squamous epithelium that is surrounded by a dense fibrous connective tissue.
A soft tissue cyst, no alveolar bone involvement.
Thought to originate from the lower anterior portion of the nasolacrimal duct.
in adults, 40-50 years old, strong predilection for females.
Can see an expansion or swelling in the mucobuccal fold in the area of the maxillary canine and the floor of the nose.
-aka BRACHIAL CLEFT CYST
-Most commonly found in the major salivary glands.
-Arises from epithelium being trapped in a lymph node during development.
Cyst lined with stratified squamous epithelial lining surrounded by a well-circumscribed component of lymphoid tissue.
floor of the mouth and the lateral borders of the tongue are the most common locations. A pinkish yellow, raised nodule.
cyst lined with keratinized epithelium resembling epidermis. Lumen is filled with keratin scales.
A developmental cyst, present at birth or noted in young children. More common in other parts of the body than in the head and neck.
Intraorally, A dough-like consistency cyst usually found in the anterior floor of the mouth. The cyst can cause displacement of the tongue.
-lined with ortho-keratinized, stratified squamous epithelium and surrounded by a connective tissue wall. Lumen is filled with keratin.
-Hair follicles, sebaceous glands, sweat glands can be found in the cyst wall.
-A cystic component that resembles a dermoid cyst.
-Teeth, bone, muscle, and nerve tissue have been found in the cystic wall. Usually found in the gonads, (typically an ovary).
-Teeth are not usually found in the malignant form of the teratoma.
- cyst forms along the same tract that the thyroid gland follows in development, from the foramen cecum to the neck.
-Most occur below the hyoid bone.
-they can occur near the foramen cecum, and be palpable.
**This is a pseudocyst, not a real cyst.
**Not a pathologic entity
Cause unknown, associated with trauma
crowding, malpositioning, and interference of normal teeth in eruption or function, or risk of cyst formation if nonerupted.
-union of two normally separated adjacent tooth germs.
-cause is unknown, heredity, external pressure, and crowding is possible.
- True fusion involves the confluence of dentin.
- COMPLETE OR INCOMPLETE
A spherical nodule of enamel located on a root surface.
- SOMETIMES MISTAKEN FOR CALCULUS
- USUALLY IN MAX MOLARS, NEAR ROOT BIFURCATION OR TRIFURCATION AREA
- SOMETIMES NEAR CEJ
-accessory cusp located on the cingulum of permanent incisors.
-Can project lingually to the height of the incisal edge of the involved tooth.
-Contains enamel, dentin and a pulp horn.
-fissure usually present, can have decay.
-May need to be removed if interfering with occlusion.
-The tooth appears to have an elongated, large pulp chambers, and short roots.
-Uncommon, in both deciduous and permanent teeth, usually affects a single molar or -several molars in one quadrant.
-No tx necessary.
-accessory enamel cusp found on the occlusal tooth surface.
-Caused by the proliferation and outpouching of enamel epithelium during tooth development.
-rare developmental anomaly
-occurs most often on mandibular premolars.
Called tuberculated premolars.
small rounded nodule on the occlusal surface of a mandibular premolar between the buccal and lingual cusps.
-A pulp horn may extend into this extra cusp.
**This is an incomplete or defective formation of enamel, resulting in the alteration of tooth form or color**
Local infection or trauma of a deciduous tooth
Ingestion of fluoride
Birth injury, premature birth
depends on the extent of the injury. Color is yellow to brown, and or severe pitting or deformity may be present. May require restoration for appearance or function.
Caused from ingesting high concentrations of fluoride during tooth formation, usually in drinking water.
Affected teeth have a mottled discoloration of enamel.
-chalky white spot on the middle third of smooth crowns.
-underlying enamel may be soft and suspicious to caries.
Cause-unknown, possible trauma to the matrix during maturation process.
can affect deciduous or permanent.
-More often maxillary anterior teeth.
-Teeth have very thin enamel and dentin present, therefore they appear in a radiograph with marked reduction of radioopacity.
-Pulp chambers are large.
Lateral periodontal cyst
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